-- Who do you think ___ the book here?
--- It may be John. He was sitting here all the morning.
| A．has left | B．leaves | C．had left | D．was leaving |
One of the advantages of living on top floor of a high rise is that you can get a good________.
| A．sight |
| B．scene |
| C．view |
| D．look |
In the meantime, the question facing business is whether such research is________the costs.
| A．valuable |
| B．worth of |
| C．worthy of |
| D．worthwhile |
________some of this juice—perhaps you'll like it.
| A．Trying |
| B．Try |
| C．To try |
| D．Have try |
—Write to me when you get home.
—________.
| A．I must |
| B．I should |
| C．I will |
| D．I can |
It's a fine day today. Don't forget to go fishing with me this afternoon, ________？
| A．will you |
| B．won't you |
| C．shall we |
| D．don't you |